motion tracking : How to apply lens distortion value from one clip to another?
The lens distortion values (and all tracking information for that matter) are uniquely associated with the clip that was loaded in the clip editor.

The distortion information can be accessed in the compositor via the Distort>Movie Distortion node. There you can assign distortion undistortion and unsdistortion to different elements. The file that contains the undistortion info can be selected there.



Note that the information from the compositor will not be reflected in the Movie Clip Editor. If you must see the undistorted information on the Movie Clip Editor, then you will have to input those values manually.